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rdma-async-rpc.rs
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rdma-async-rpc.rs
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#![forbid(unsafe_code)]
#![deny(clippy::all)]
use rdma_async::{Buf, RdmaConnection, RdmaListener};
use std::net::SocketAddr;
use std::sync::Arc;
use std::time::Duration;
use std::{env, io};
use anyhow::Result;
use numeric_cast::NumericCast;
use serde::{Deserialize, Serialize};
use tokio::spawn;
use tracing::info;
#[tokio::main]
async fn main() -> Result<()> {
if env::var("RUST_BACKTRACE").is_err() {
env::set_var("RUST_BACKTRACE", "full")
}
if env::var("RUST_LOG").is_err() {
env::set_var(
"RUST_LOG",
"rdma_async_rpc=trace,rdma_async=trace,rdma=trace",
)
}
tracing_subscriber::fmt::init();
let addr = SocketAddr::from(([127, 0, 0, 1], 18515));
spawn(server(addr));
tokio::time::sleep(Duration::from_millis(100)).await;
let _ = spawn(client(addr)).await;
Ok(())
}
#[derive(Debug, Clone, Serialize, Deserialize)]
enum Message {
Ping(String),
Pong(String),
Exit,
}
async fn server(addr: SocketAddr) -> Result<()> {
let listener = RdmaListener::bind(addr).await?;
loop {
let (conn, remote_addr) = listener.accept().await?;
info!("server accepted connection from {}", remote_addr);
spawn(async move {
let mut recv_result;
let mut send_result;
let mut head;
let mut buf = Buf::new_zeroed(1024, 8);
loop {
(recv_result, buf) = conn.recv(buf).await;
let (nread, _) = recv_result?;
let req: Message = bincode::deserialize(&buf.as_slice()[..nread])?;
info!("server received: {:?}", req);
match req {
Message::Ping(msg) => {
let res = Message::Pong(msg);
let mut writer = io::Cursor::new(buf.as_slice_mut());
bincode::serialize_into(&mut writer, &res)?;
let nbytes: usize = writer.position().numeric_cast();
(send_result, head) = conn.send(buf.head(nbytes), None).await;
send_result?;
buf = head.into_inner();
}
Message::Pong { .. } => {}
Message::Exit => break,
}
}
anyhow::Result::<()>::Ok(())
});
}
}
async fn client(addr: SocketAddr) -> Result<()> {
let conn = Arc::new(RdmaConnection::connect(addr).await?);
let mut recv_result;
let mut send_result;
let mut head;
let mut buf = Buf::new_zeroed(1024, 8);
for i in 1..=64 {
let req = Message::Ping(format!("iter {i}"));
info!("client send : {:?}", req);
let mut writer = io::Cursor::new(buf.as_slice_mut());
bincode::serialize_into(&mut writer, &req)?;
let nbytes: usize = writer.position().numeric_cast();
(send_result, head) = conn.send(buf.head(nbytes), None).await;
send_result?;
buf = head.into_inner();
(recv_result, buf) = conn.recv(buf).await;
let (nread, _) = recv_result?;
let res: Message = bincode::deserialize(&buf.as_slice()[..nread])?;
info!("client received: {:?}", res);
}
{
let req = Message::Exit;
let mut writer = io::Cursor::new(buf.as_slice_mut());
bincode::serialize_into(&mut writer, &req)?;
let nbytes: usize = writer.position().numeric_cast();
(send_result, _) = conn.send(buf.head(nbytes), None).await;
send_result?;
}
Ok(())
}